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Anna007 [38]
3 years ago
9

What is 43.78 in world form?

Mathematics
2 answers:
zavuch27 [327]3 years ago
6 0
 Fourty-three and seventy-eight hundreths. Hope this help :)
netineya [11]3 years ago
6 0
Forty three thousand-seventy eight
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Which is the midpoint of the segment joining (12, 2) and (-5, – 7)?
Rainbow [258]

Answer:

m(x, y)=(\frac{7}{2} , -\frac{5}{2} )

Step-by-step explanation:

Midpoint of line segment is calculated as

m(x, y)=(\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2} )  -----------(1)

Here

(x_1, y_1) = (12,2) \ \  and \ \ (x_2, y_2) = (-5, -7)

Substituting values in equation (1)

m(x, y)=(\frac{12-5}{2} , \frac{2-7}{2} )

m(x, y)=(\frac{7}{2} , -\frac{5}{2} )

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3 years ago
Eloise made a list of some multiples of 8/5 . Write 5 fractions that can be in Eloise list.
Kaylis [27]
16/10
24/15
32/20
40/25
48/30
4 0
3 years ago
Find the discriminant of the equation.<br> x2 + 3x - 4 = 0<br><br> -7<br> 25<br> -4<br> 1
klemol [59]
The Discriminant for the equation x2 + 3x - 4 = 0 would be 25.
8 0
3 years ago
Find the cardinal number for the given set.
iris [78.8K]

Answer:

The cardinal number is 12

Step-by-step explanation:

The cardinal number of a set represents the number of distinct elements of the set. That means for this exercise the goal is to identify the total number of elements of the set.

First step. Identifying the elements of the set.

If we look at the sequence 9, 11, 13, ... , 31, we have an arithmetic sequence a_n, so we can start by finding the common difference d.

d = a_{n+1}-a_n

That means we can pick any 2 consecutive terms and find the subtraction of them, so we can pick for example 9 and 11, thus we get

d= 11-9\\d=2

Second step. Finding the number of terms of the arithmetic sequence.

Now to find the number of elements n of that sequence, we can look at the last number of the sequence on this case it is 31, and we can use the formula for the nth term, that is

a_n=a_1 + d(n-1)

Replacing the last term a_n = 31 and the initial term a_1=9, will give us

31=9+2(n-1)

From there we can solve for n, by moving first that 9 to the other side.

31-9=2(n-1)\\22=2(n-1)

Then we can divide both sides by 2, and lastly add by 1.

\cfrac{22}{2} = n-1  \\11 = n-1\\\boxed{n= 12}

Thus since the sequence has 12 elements, we know that the cardinal number of the set is 12.

7 0
3 years ago
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